var divnum = 0;
var lastimgon = "img1";

function preload() {

	if (document.images) {
		img1on = new Image();
		img1on.src ="images/charter_b.jpg";
		img2on = new Image();
		img2on.src ="images/tours_b.jpg";
		img3on = new Image();
		img3on.src ="images/testimonials_b.jpg";
		img4on = new Image();
		img4on.src ="images/maps_b.jpg";
		img5on = new Image();
		img5on.src ="images/faq_b.jpg";
		img6on = new Image();
		img6on.src ="images/booktour_b.jpg";


		img1off = new Image();
		img1off.src ="images/charter_a.jpg";
		img2off = new Image();
		img2off.src ="images/tours_a.jpg";
		img3off = new Image();
		img3off.src ="images/testimonials_a.jpg";
		img4off = new Image();
		img4off.src ="images/maps_a.jpg";
		img5off = new Image();
		img5off.src ="images/faq_a.jpg";
		img6off = new Image();
		img6off.src ="images/booktour_a.jpg";
	}
}

function imgOn(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + "on.src");
		lastimgon = imgName;
		
	}
}


function imgOff(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + "off.src");

	}
}

function showdiv(i) {

divnum = i;

if(document.layers){

	eval("document.div" + i).visibility = 'visible';
	document.div0.visibility = 'visible';
	document.div1.visibility = 'visible';
	document.divR.visibility = 'visible';
    
} else if(document.all) {

	eval("document.all.div" + i + ".style").visibility = 'visible';
	document.all.div0.style.visibility = 'visible';
	document.all.div1.style.visibility = 'visible';
	document.all.divR.style.visibility = 'visible';
	
} else if(document.getElementById) {

	document.getElementById("div" + i).style.visibility = 'visible';
	document.getElementById("div0").style.visibility = 'visible';
	document.getElementById("div1").style.visibility = 'visible';
	document.getElementById("divR").style.visibility = 'visible';

}
}
 
 
function hidediv() {

imgOff(lastimgon);
        
if(document.layers){

       eval("document.div" + divnum).visibility = 'hidden';
       document.div0.visibility = 'hidden';
	   document.div1.visibility = 'hidden';
	   document.divR.visibility = 'hidden';
	
} else if(document.all) {

       eval("document.all.div" + divnum + ".style").visibility = 'hidden';
       document.all.div0.style.visibility = 'hidden';
	   document.all.div1.style.visibility = 'hidden';
	   document.all.divR.style.visibility = 'hidden';
    
} else if(document.getElementById) {

	document.getElementById("div" + divnum).style.visibility = 'hidden';
	document.getElementById("div0").style.visibility = 'hidden';
	document.getElementById("div1").style.visibility = 'hidden';
	document.getElementById("divR").style.visibility = 'hidden';

			
}
}